The edges of human tolerance to hot and cold

 A few years ago, when I was in college, I was on a volunteer trip in the North of Wisconsin and I was invited to an Ojibwe sweatlodge. I had never had an experience like that before. It was incredibly powerful, like being reborn inside a volcano. But it also tested the very limits of my heat endurance, particularly since Christian missionaries influenced the tribe enough that women have to wear thick long skirts while men go into the lodge shirtless.